Year	% of total employment
1991	38.65
1992	37.59
1993	39.83
1994	38.7
1995	39.2
1996	41.31
1997	39.48
1998	39.4
1999	39.35
2000	39.49
2001	42.78
2002	42.23
2003	41.39
2004	42.77
2005	41.44
2006	43.35
2007	45.41
2008	41.72
2009	43.93
2010	43.68
2011	42.87
2012	46.46
2013	45.9
2014	43.5
2015	45.47
2016	43.73
2017	45.85
2018	46.51
2019	44.07
2020	46.57